<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Reference</title>
<style>
.clamp {
  display: flow-root;
  font: 16px / 32px serif;
  padding: 0 4px;
  white-space: pre;
  background-color: yellow;
}
.float {
  float: left;
  margin: 4px;
  white-space: pre;
  background-color: skyblue;
}
</style>
<div class="clamp">Line 1
Line 2
Line 3
Line 4…<div class="float">Line A
Line B
Line C
Line D
Line E</div></div>
